Home / 20,117.05-27,761.83-11,165.13

Finding the Fourth Proportional to 20,117.05, 27,761.83 and 11,165.13

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Solution

The fourth proportional to 20,117.05, 27,761.83 and 11,165.13 is: 15,408.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.05 : 27,761.83 = 11,165.13 : x
  2. Step 2: Convert to fraction form
    20,117.05/27,761.83 = 11,165.13/x
  3. Step 3: Cross multiply
    20,117.05x = 27,761.83 × 11,165.13
  4. Step 4: Simplify right side
    20,117.05x = 309,964,413.08
  5. Step 5: Solve for x
    x = 309,964,413.08/20,117.05
  6. Step 6: Final answer
    x = 15,408.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.